Decoding Firebase Realtime Database Snapshot Flutter-CodePudding

I am using firebase realtime database for my project, and when i read information from the database, I get an Object as an output.

final databaseInstance = FirebaseDatabase.instance;
final posts = await databaseInstance.ref("Posts").once();
print(posts.snapshot.value);

The result I get is {Test Post: {Description: testing 123123, Date: 19 Dec}}. However, I do not want it in this form. How should I read it such that i can read the data such that when I want the date I only get 19 Dec?

CodePudding user response：

Oops I actually found an answer to my problem. The problem with it was that when firebase realtime database was returning the result to me, it was not really is json. So I has to convert it to json by myself using the function jsonEncode(data). When code was run, {Test Post: {Description: testing 123123, Date: 19 Dec}} to {"Test Post":{"Description":"testing 123123","Date":"19 Dec"}}, which solves my problem as I could just take have ['Test Post'] behind the variable.

CodePudding user response：

you can create a class called post that has Description and date variables like so:

   class Post{
    final String description, date;
    
    Post({
    required this.description,
    required this.date,
    });
    
    factory Post.fromJson(json){
    return Post(
    description: json['description'],
    date: json['date'],
    );
}
}

now when you get the snapshot simply use it like this:

var result = posts.snapshot.value;

final post = Post.fromJson(result['Test Post']);

and you can use post.date to get your date